Bloomberg Opinion columnist Barry Ritholtz speaks with BlackRock Senior Managing Director Salim Ramji, who is global head of iShares and index investments (the total AUM is over $4 trillion) and a member of the firm’s global executive committee. Ramji was previously head of BlackRock's U.S. wealth advisory business and global head of corporate strategy. Before joining BlackRock, he was a senior partner at McKinsey & Company where he led the asset and wealth management practice areas. He started his career as a corporate finance and mergers and acquisitions lawyer in London and Hong Kong.